National Weather Service Advanced Hydrologic Prediction Service

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This probabilistic forecast is issued by the North Central River Forecast Center.

	Hydrograph			River at a Glance			Download			Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental) Not Available

About this graph

Forecasts for the Vermilion River (N-IL) at Pontiac are issued as needed during times of high water, but are not routinely available.

Return to Area Map

Downstream Gauge

Zoom Level:15

Flood Categories (in feet)

Major Flood Stage:	18
Moderate Flood Stage:	15
Flood Stage:	14
Action Stage:	13
Low Stage (in feet):	-9999

Historic Crests
(1) 19.18 ft on 01/09/2008
(2) 19.16 ft on 12/04/1982
(3) 18.12 ft on 06/03/1980
(4) 17.90 ft on 07/10/1951
(5) 17.46 ft on 05/14/1970
(6) 17.38 ft on 12/29/2015 (P)
(7) 17.23 ft on 01/14/2005
(8) 17.20 ft on 04/28/1957
(9) 17.19 ft on 05/02/2019
(10) 17.00 ft on 05/01/1933
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 17.19 ft on 05/02/2019
(2) 15.67 ft on 02/22/2018 (P)
(3) 17.38 ft on 12/29/2015 (P)
(4) 14.59 ft on 07/12/2015
(5) 12.51 ft on 02/22/2014
(6) 15.04 ft on 06/01/2013
(7) 10.56 ft on 05/08/2012
(8) 12.02 ft on 04/23/2011
(9) 14.83 ft on 12/31/2009
(10) 14.83 ft on 10/31/2009
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.17 ft on 07/01/2012
(2) 2.25 ft on 10/01/2007

	Gauge Location	Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

If you notice any errors in the below information, please contact our Webmaster
22	Pontiac water treatment plant is threatened.
21	Widespread inundation of the floodplain south of downtown Pontiac floods reaches up to 5 blocks from the river.
20	Lincoln Elementary School is threatened in Pontiac.
19	Numerous residences threatened along Water Street north of the river in Pontiac. Widespread inundation of the floodplain south of downtown Pontiac reaches up to 2 blocks from the river. Utility structures are threatened in Pontiac. Livingston County 4-H Park is threatened northwest of Pontiac.
18	Inundation of Humiston-Riverside Park reaches Water Street north of the river in Pontiac. Residences along Mockingbird Lane and Meadowlark Drive are threatened west of Pontiac.
17	Numerous residences threatened along Grove Street south of the river in Pontiac. Washington Elementary School is threatened in Pontiac.
16.5	Low-lying sections of Southside Cemetery are inundated in Pontiac.
15	Low-lying residences threatened between Mill Street and Chautauqua Park in Pontiac. IL-116 threatened east and west of Pontiac.
13	Widespread areas of Chatauqua Park are inundated in Pontiac. Park Street is threatened in Pontiac.
12.5	Low-lying sections of Chautauqua Park are inundated in Pontiac.
11	Low-lying sections of Humiston-Riverside Park are inundated in Pontiac.
10	Low-lying sections of Play Park are inundated in Pontiac.
8	Trails along the river in Humiston-Riverside Park are threatened in Pontiac.

Other Real-time and/or Archive Data Sources:

Additional Information

How much forecast precipitation was used for the current river forecast?
USGS Streamflow Duration Hydrograph
How low could the river get?

Collaborative Agencies

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

NWS Information

National Weather Service
Chicago Weather Forecast Office
333 W. University Dr.
Romeoville, IL 60446
(815) 834-1435
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Page last modified: 2-Nov-2020 7:29 PM

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